Line-make means a collection of models, series, or groups of motor vehicles manufactured by or for a particular manufacturer, distributor, or importer that are offered for sale, lease, or distribution pursuant to a common brand name or mark, except that:
(1) Multiple brand names or marks may constitute a single line-make, but only when included in a common dealer agreement and the manufacturer, distributor, or importer offers such vehicles bearing the multiple names or marks together only, and not separately, to its authorized dealers; and
(2) Motor vehicles bearing a common brand name or mark may constitute separate line-makes when pertaining to motor vehicles subject to separate dealer agreements or when such vehicles are intended for different types of use.